vfs_subr.c (8947be9ba004add6deae3c56398bed461c4995f1) vfs_subr.c (5965373e69ca208cedd8ede9716ef0d58e6c3434)
1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

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2625 nmp = TAILQ_NEXT(mp, mnt_list);
2626 vfs_unbusy(mp, td);
2627 }
2628 mtx_unlock(&mountlist_mtx);
2629}
2630#endif
2631
2632/*
1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.

--- 2616 unchanged lines hidden (view full) ---

2625 nmp = TAILQ_NEXT(mp, mnt_list);
2626 vfs_unbusy(mp, td);
2627 }
2628 mtx_unlock(&mountlist_mtx);
2629}
2630#endif
2631
2632/*
2633 * Fill in a struct xvfsconf based on a struct vfsconf.
2634 */
2635static void
2636vfsconf2x(struct vfsconf *vfsp, struct xvfsconf *xvfsp)
2637{
2638
2639 strcpy(xvfsp->vfc_name, vfsp->vfc_name);
2640 xvfsp->vfc_typenum = vfsp->vfc_typenum;
2641 xvfsp->vfc_refcount = vfsp->vfc_refcount;
2642 xvfsp->vfc_flags = vfsp->vfc_flags;
2643 /*
2644 * These are unused in userland, we keep them
2645 * to not break binary compatibility.
2646 */
2647 xvfsp->vfc_vfsops = NULL;
2648 xvfsp->vfc_next = NULL;
2649}
2650
2651static int
2652sysctl_vfs_conflist(SYSCTL_HANDLER_ARGS)
2653{
2654 struct vfsconf *vfsp;
2655 struct xvfsconf *xvfsp;
2656 int cnt, error, i;
2657
2658 cnt = 0;
2659 for (vfsp = vfsconf; vfsp != NULL; vfsp = vfsp->vfc_next)
2660 cnt++;
2661 xvfsp = malloc(sizeof(struct xvfsconf) * cnt, M_TEMP, M_WAITOK);
2662 /*
2663 * Handle the race that we will have here when struct vfsconf
2664 * will be locked down by using both cnt and checking vfc_next
2665 * against NULL to determine the end of the loop. The race will
2666 * happen because we will have to unlock before calling malloc().
2667 * We are protected by Giant for now.
2668 */
2669 i = 0;
2670 for (vfsp = vfsconf; vfsp != NULL && i < cnt; vfsp = vfsp->vfc_next) {
2671 vfsconf2x(vfsp, xvfsp + i);
2672 i++;
2673 }
2674 error = SYSCTL_OUT(req, xvfsp, sizeof(struct xvfsconf) * i);
2675 free(xvfsp, M_TEMP);
2676 return (error);
2677}
2678
2679SYSCTL_PROC(_vfs, OID_AUTO, conflist, CTLFLAG_RD, NULL, 0, sysctl_vfs_conflist,
2680 "S,xvfsconf", "List of all configured filesystems");
2681
2682/*
2633 * Top level filesystem related information gathering.
2634 */
2635static int sysctl_ovfs_conf(SYSCTL_HANDLER_ARGS);
2636
2637static int
2638vfs_sysctl(SYSCTL_HANDLER_ARGS)
2639{
2640 int *name = (int *)arg1 - 1; /* XXX */
2641 u_int namelen = arg2 + 1; /* XXX */
2642 struct vfsconf *vfsp;
2683 * Top level filesystem related information gathering.
2684 */
2685static int sysctl_ovfs_conf(SYSCTL_HANDLER_ARGS);
2686
2687static int
2688vfs_sysctl(SYSCTL_HANDLER_ARGS)
2689{
2690 int *name = (int *)arg1 - 1; /* XXX */
2691 u_int namelen = arg2 + 1; /* XXX */
2692 struct vfsconf *vfsp;
2693 struct xvfsconf xvfsp;
2643
2694
2695 printf("WARNING: userland calling deprecated sysctl, "
2696 "please rebuild world\n");
2697
2644#if 1 || defined(COMPAT_PRELITE2)
2645 /* Resolve ambiguity between VFS_VFSCONF and VFS_GENERIC. */
2646 if (namelen == 1)
2647 return (sysctl_ovfs_conf(oidp, arg1, arg2, req));
2648#endif
2649
2698#if 1 || defined(COMPAT_PRELITE2)
2699 /* Resolve ambiguity between VFS_VFSCONF and VFS_GENERIC. */
2700 if (namelen == 1)
2701 return (sysctl_ovfs_conf(oidp, arg1, arg2, req));
2702#endif
2703
2650 /* XXX the below code does not compile; vfs_sysctl does not exist. */
2651#ifdef notyet
2652 /* all sysctl names at this level are at least name and field */
2653 if (namelen < 2)
2654 return (ENOTDIR); /* overloaded */
2655 if (name[0] != VFS_GENERIC) {
2656 for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
2657 if (vfsp->vfc_typenum == name[0])
2658 break;
2659 if (vfsp == NULL)
2660 return (EOPNOTSUPP);
2661 return ((*vfsp->vfc_vfsops->vfs_sysctl)(&name[1], namelen - 1,
2662 oldp, oldlenp, newp, newlen, td));
2663 }
2664#endif
2665 switch (name[1]) {
2666 case VFS_MAXTYPENUM:
2667 if (namelen != 2)
2668 return (ENOTDIR);
2669 return (SYSCTL_OUT(req, &maxvfsconf, sizeof(int)));
2670 case VFS_CONF:
2671 if (namelen != 3)
2672 return (ENOTDIR); /* overloaded */
2673 for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
2674 if (vfsp->vfc_typenum == name[2])
2675 break;
2676 if (vfsp == NULL)
2677 return (EOPNOTSUPP);
2704 switch (name[1]) {
2705 case VFS_MAXTYPENUM:
2706 if (namelen != 2)
2707 return (ENOTDIR);
2708 return (SYSCTL_OUT(req, &maxvfsconf, sizeof(int)));
2709 case VFS_CONF:
2710 if (namelen != 3)
2711 return (ENOTDIR); /* overloaded */
2712 for (vfsp = vfsconf; vfsp; vfsp = vfsp->vfc_next)
2713 if (vfsp->vfc_typenum == name[2])
2714 break;
2715 if (vfsp == NULL)
2716 return (EOPNOTSUPP);
2678 return (SYSCTL_OUT(req, vfsp, sizeof *vfsp));
2717 vfsconf2x(vfsp, &xvfsp);
2718 return (SYSCTL_OUT(req, &xvfsp, sizeof(xvfsp)));
2679 }
2680 return (EOPNOTSUPP);
2681}
2682
2719 }
2720 return (EOPNOTSUPP);
2721}
2722
2683SYSCTL_NODE(_vfs, VFS_GENERIC, generic, CTLFLAG_RD, vfs_sysctl,
2723SYSCTL_NODE(_vfs, VFS_GENERIC, generic, CTLFLAG_RD | CTLFLAG_SKIP, vfs_sysctl,
2684 "Generic filesystem");
2685
2686#if 1 || defined(COMPAT_PRELITE2)
2687
2688static int
2689sysctl_ovfs_conf(SYSCTL_HANDLER_ARGS)
2690{
2691 int error;

--- 762 unchanged lines hidden --- 		2724 "Generic filesystem");
2725
2726#if 1 || defined(COMPAT_PRELITE2)
2727
2728static int
2729sysctl_ovfs_conf(SYSCTL_HANDLER_ARGS)
2730{
2731 int error;

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